CN208931568U - Battery-operated motor cycle no-clutch electrodeless variable-speed drive system - Google Patents
Battery-operated motor cycle no-clutch electrodeless variable-speed drive system Download PDFInfo
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- CN208931568U CN208931568U CN201821057081.9U CN201821057081U CN208931568U CN 208931568 U CN208931568 U CN 208931568U CN 201821057081 U CN201821057081 U CN 201821057081U CN 208931568 U CN208931568 U CN 208931568U
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Abstract
The utility model provides battery-operated motor cycle no-clutch electrodeless variable-speed drive system, battery-operated motor cycle no-clutch electrodeless variable-speed drive system, including driving component, driven subassembly, transport mechanism, driving component is mounted on the motor output shaft of battery-operated motor cycle, driving component is connect by transport mechanism with driven subassembly, it is fixedly connected between driven subassembly and the transmission input shaft of battery-operated motor cycle by the first synchronizer mechanisms, is rotatablely connected between driven subassembly and transmission input shaft by the second synchronizer mechanisms.The utility model, which both can solve hub motor and built-in motor, does not have the problem of speed changing function in power transmission, it can be obtained in power performance and cost control again balanced, with existing internal combustion engine motorcycle in operating characteristic and performance more closely, increasing the safety ridden and comfort.
Description
Technical field
The utility model relates to electric motorcycle motor vehicle drive system technical field more particularly to battery-operated motor cycle no-clutch without
Pole variable speed drive system.
Background technique
Under the global agitation of environmental protection and green energy resource, the popularization of battery-operated motor cycle and popularize irresistible but existing
There is the driving method of battery-operated motor cycle one is directly replacing rear-wheel with hub motor, however motor must bear road surface impact force,
The problems such as electric motor starting torque is not easy to control, and high speed performance is insufficient is difficult to overcome；Another kind is straight after slowing down with built-in motor
Driving rear-wheel is connect, but this is designed as that high speed performance is asked to show, it is necessary to which expanded motor power is insufficient come torque when overcoming high revolving speed
The problem of, bring the problems such as power consumption increases, battery-operated motor cycle endurance is insufficient, it is necessary to increase battery capacity and ask to solve this
Topic, thus caused increased costs become another obstruction for promoting battery-operated motor cycle.
It in the prior art further include applying original CVT stepless speed-changing system being commonly utilized on pedal motorcycle in electricity
On dynamic motorcycle, but this system original is designed as that internal combustion engine is made to be unlikely to drag vehicle in idling, and have in vehicle launch compared with
Good torque can drive acceleration, therefore must have a set of clutch system on CVT system, when internal combustion engine reaches certain revolving speed
When, clutch plate block is engaged with transport drum could be by power transmission to wheel.Although above-mentioned CVT system can provide better company
Continuous electrodeless variable-speed effect, but the process that motor idle running is engaged until clutch plate block with transport drum, are caused using motor as power
Battery-operated motor cycle energy consumption, and climb when friction block be easy failure mode.Therefore, needing one kind both can solve wheel hub electricity
Machine and built-in motor do not have the problem of speed changing function in power transmission, and can obtain in power performance and cost control equal
Weighing apparatus, with existing motorcycle in operating characteristic and performance more closely, increasing the electronic of the safety and comfort ridden
Motorcycle drive systems.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide battery-operated motor cycle no-clutch is electrodeless
Variable speed drive system, not only can solve hub motor and built-in motor does not have the problem of speed changing function in power transmission, but also can be
Equilibrium is obtained in power performance and cost control, with existing motorcycle in operating characteristic and performance more closely, increasing
The safety ridden and comfort.
The utility model provides battery-operated motor cycle no-clutch electrodeless variable-speed drive system, including driving component, driven group
Part, transport mechanism, the driving component are mounted on the motor output shaft of battery-operated motor cycle, and the driving component passes through the biography
Mechanism is sent to connect with the driven subassembly, it is same by first between the driven subassembly and the transmission input shaft of battery-operated motor cycle
Bu Qi mechanism is fixedly connected, and is connected between the driven subassembly and the transmission input shaft by the rotation of the second synchronizer mechanisms
It connects.
Further, the driving component includes active fast pulley, active slip wheel, the first Power Component, the active
Fast pulley is fixedly connected with the motor output shaft, and the active slip wheel is slidably connected with the motor output shaft, the biography
Mechanism is sent to be placed between the active fast pulley, the active slip wheel, first Power Component and the active slip wheel
Connection, first Power Component push the active slip wheel mobile.
Further, the driven subassembly includes driven fast pulley, the follower slip wheel equipped with sliding slot, the second power packages
Part, the driven fast pulley, the follower slip wheel are fixedly connected with the transmission input shaft, and the transport mechanism is placed in institute
It states between driven fast pulley, the follower slip wheel, second Power Component is connect with the follower slip wheel, and described second
Power Component drives the follower slip wheel to move on the chute.
Further, the driven fast pulley and the active slip wheel are located at the side of the transport mechanism, it is described from
Dynamic movable pulley and the active fast pulley are located at the other side of the transport mechanism.
Further, first Power Component includes ball and stationary backplate, and the active slip wheel inner wall is equipped with
Mounting groove, described stationary backplate one end are fixedly installed in the mounting groove, and the stationary backplate other end is placed in the active
The first cavity is formed between movable pulley inner wall and the motor output shaft, the ball is placed in first cavity, the rolling
Pearl pushes the active slip wheel mobile under the action of the centrifugal force.
Further, second Power Component includes driven wheel spring and spring retaining plate, the spring retaining plate peace
Loaded on the follower slip wheel, the both ends of the spring retaining plate are placed in the follower slip wheel inner wall and the gearbox is defeated
Enter and form the second cavity between axis, the driven wheel spring is placed in second cavity, and it is solid to be fixedly mounted on the spring
On fixed board and the follower slip wheel, the driven wheel spring drives the follower slip wheel under the transport mechanism active force
It moves on the chute.
Further, the driving component further includes sliding sleeve, and the sliding sleeve is sheathed on the motor output shaft, the master
Dynamic movable pulley is slidably connected by the sliding sleeve and the motor output shaft.
Further, first synchronizer mechanisms are bearing, and the bearing is locked with the transmission input shaft.
Further, second synchronizer mechanisms are unilateral bearing, the unilateral bearing and the transmission input shaft
Contact.
Further, the transport mechanism is speed belt.
Compared with prior art, the utility model has the beneficial effects that:
The utility model provide battery-operated motor cycle no-clutch electrodeless variable-speed drive system, battery-operated motor cycle no-clutch without
Pole variable speed drive system, including driving component, driven subassembly, transport mechanism, driving component are mounted on the motor of battery-operated motor cycle
On output shaft, driving component is connect by transport mechanism with driven subassembly, the gearbox input of driven subassembly and battery-operated motor cycle
It is fixedly connected between axis by the first synchronizer mechanisms, passes through the second synchronizer mechanisms between driven subassembly and transmission input shaft
Rotation connection.The utility model eliminates clutch and transport drum mechanism on traditional CVT electrodeless variable-speed drive system driven wheel,
The purpose that bearing and unilateral bearing are reached power transmission and be freely rotated is installed in driven subassembly, when system is by motor driven
Whipping, promotion active slip wheel move on sliding sleeve and change driving component ball in driving component under the action of the centrifugal force
Interior wheel footpath, while the spring in driven wheel assembly is pushed compression by speed belt pulling force or resetted, and drives follower slip wheel in cunning
The interior wheel footpath of driven subassembly is moved and changed on slot, this reciprocation changes driving component and the rotating ratio of driven subassembly reaches nothing
Pole speed changing effect, the more traditional CVT stepless speed-changing system of the utility model structure is simple and cost is lower, and solves traditional CVT
Electrodeless variable-speed drive system set motor caused by battery-operated motor cycle idle running energy consumption and friction block are easy lacking for failure mode
Point, system possess electrodeless variable-speed function, can obtain equilibrium in power performance and cost control, solve existing using wheel hub electricity
The battery-operated motor cycle of machine and built-in motor does not have the problem of speed changing function in power transmission, makes battery-operated motor cycle in operating characteristic
And increase the safety ridden and comfort closer to internal combustion engine motorcycle in performance, realize battery-operated motor cycle with smaller
Less consume energy of power meets the target of riding of the longer mileage of faster speed.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.Specific embodiment of the present utility model is shown in detail by following embodiment and its attached drawing.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 is the battery-operated motor cycle no-clutch electrodeless variable-speed driving system structure figure one of the utility model；
Fig. 2 is the battery-operated motor cycle no-clutch electrodeless variable-speed driving system structure figure two of the utility model.
In figure: 1, driving component；11, active fast pulley；12, active slip wheel；121, mounting groove；13, ball；14, solid
Determine backboard；15, sliding sleeve；2, driven subassembly；21, driven fast pulley；22, follower slip wheel；23, bearing；24, unilateral bearing；25,
Driven wheel spring；26, spring retaining plate；3, transport mechanism；4, motor output shaft；5, transmission input shaft.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
Battery-operated motor cycle no-clutch electrodeless variable-speed drive system, as shown in Figure 1, include driving component 1, driven subassembly 2,
Transport mechanism 3, driving component 1 are mounted on the motor output shaft 4 of battery-operated motor cycle, driving component 1 by transport mechanism 3 with from
Dynamic component 2 connects, and connects between driven subassembly 2 and the transmission input shaft 5 of battery-operated motor cycle by the way that the first synchronizer mechanisms are fixed
It connects, is rotatablely connected between driven subassembly 2 and transmission input shaft 5 by the second synchronizer mechanisms.Preferably, transport mechanism 3 is
Speed belt.Motor output shaft 4 and motor provide power with spline or the connection of shaft coupling or gear manner, motor output power by
Motor output shaft 4 reaches driving component 1, is transmitted to driven subassembly 2 via speed belt, then through transmission input shaft 5 by power
It is transmitted to gearbox.The clutch and transport drum on traditional CVT electrodeless variable-speed drive system driven wheel are eliminated in the present embodiment
The purpose that bearing 23 and unilateral bearing 24 are reached power transmission and be freely rotated is installed in driven subassembly 2 by mechanism.
As shown in Figure 2, it is preferred that driving component 1 includes active fast pulley 11, active slip wheel 12, the first Power Component,
Active fast pulley 11 is fixedly connected with motor output shaft 4, and active slip wheel 12 is slidably connected with motor output shaft 4, transport mechanism 3
It is placed between active fast pulley 11, active slip wheel 12, the first Power Component is connect with active slip wheel 12, the first Power Component
Push the mobile interior wheel footpath for changing driving component 1 of active slip wheel 12.
In one embodiment, it is preferred that driven subassembly 2 include driven fast pulley 21, the follower slip wheel 22 equipped with sliding slot,
Second Power Component, driven fast pulley 21, follower slip wheel 22 are fixedly connected with transmission input shaft 5, transport mechanism 3 be placed in from
Between dynamic fast pulley 21, follower slip wheel 22, the second Power Component is connect with follower slip wheel 22, the drive of the second Power Component from
Dynamic movable pulley 22 moves on the chute, and the second Power Component is pushed compression by speed belt pulling force or resetted, and drives follower slip
Wheel 22 moves on the chute and changes the interior wheel footpath of driven subassembly 2, the reciprocation of the first Power Component and the second Power Component
The rotating ratio for changing driving component 1 and driven subassembly 2 reaches electrodeless variable-speed effect.
In one embodiment, as shown in Figure 2, it is preferred that driven fast pulley 21 is located at transport mechanism 3 with active slip wheel 12
Side, follower slip wheel 22 and active fast pulley 11 are located at the other side of transport mechanism 3.Preferably, the first Power Component packet
Ball 13 and stationary backplate 14 are included, 12 inner wall of active slip wheel is equipped with mounting groove 121, and 14 one end of stationary backplate is fixedly installed in
In mounting groove 121,14 other end of stationary backplate is placed between 12 inner wall of active slip wheel and motor output shaft 4 and forms the first chamber
Body, ball 13 are placed in the first cavity, it is preferred that driving component 1 further includes sliding sleeve 15, and sliding sleeve 15 is sheathed on motor output shaft 4
On, active slip wheel 12 is slidably connected by sliding sleeve 15 with motor output shaft 4.The active slip wheel 12 when system is by motor driven
Whipping, promotion active slip wheel 12 move on sliding sleeve 15 and change driving component 1 interior ball 13 under the action of the centrifugal force
Interior wheel footpath.
In one embodiment, as shown in Figure 2, it is preferred that the second Power Component includes that driven wheel spring 25 and spring are fixed
Plate 26, spring retaining plate 26 are installed on follower slip wheel 22, and the both ends of spring retaining plate 26 are placed in 22 inner wall of follower slip wheel
The second cavity is formed between transmission input shaft 5, driven wheel spring 25 is placed in the second cavity, and it is solid to be fixedly mounted on spring
On fixed board 26 and follower slip wheel 22, driven wheel spring 25 drives follower slip wheel 22 in sliding slot under 3 active force of transport mechanism
Upper movement, driven wheel spring 25 are pushed compression by speed belt pulling force or resetted, and follower slip wheel 22 is driven to move on the chute
And changing the interior wheel footpath of driven subassembly 2, the reciprocation of ball 13 and driven wheel spring 25 changes driving component 1 and driven subassembly
2 rotating ratio reaches electrodeless variable-speed effect.
In one embodiment, as shown in Figure 2, it is preferred that the first synchronizer mechanisms are bearing 23, and bearing 23 and gearbox are defeated
Enter axis 5 to lock.Preferably, the second synchronizer mechanisms are unilateral bearing 24, and unilateral bearing 24 is contacted with transmission input shaft 5.This
In embodiment, this system working principle are as follows:
When motor starts turning, motor output power reaches driving component 1 via motor output shaft 4, then via speed change skin
Band is transmitted to driven subassembly 2, at this time 2 revolving speed of driven subassembly be greater than transmission input shaft 5, the unilateral bearing 24 of driven subassembly 2 with
Power is reached gearbox by the occlusion of transmission input shaft 5, wheel shaft is reached after transmission gear slows down, battery-operated motor cycle is driven to advance.
When vehicle oil return is slowed down, rotation is slowed or stopped in motor speed therewith, at this time because 1 revolving speed of driving component subtracts therewith
It is slow or stop operating, it causes 2 revolving speed of driven subassembly slack-off and then revolving speed is less than the revolving speed of transmission input shaft 5, on driven subassembly 2
Unilateral bearing 24 is no longer engaged with transmission input shaft 5, but transmission input shaft 5 is still persistently rotated because of vehicle advance inertia, this
When vehicle be in sliding state, even if driving component 1 is influenced rapidly to stop with driven subassembly 2 by motor reversal torque, but because from
Dynamic component 2 does not interlock with transmission input shaft 5, will not generate vehicle pause and transition in rhythm or melody or hurried deceleration conditions, it is ensured that the stability ridden
And controllability.
When vehicle deceleration further accelerates, initial stage motor rotate but reach driven subassembly 2 revolving speed be still below gearbox input
The revolving speed of axis 5, motor is in tick-over at this time, and the electric current of consumption is small, improves general electric vehicle and starts high-current consumption
Situation, when motor speed continues to increase, when reaching the revolving speed of driven subassembly 2 and being greater than the revolving speed of transmission input shaft 5, driven group
The unilateral bearing 24 of part 2 is engaged once again with transmission input shaft 5, power is reached gearbox, vehicle no longer slows down or start to add
Speed.
Ball 13 when system is by motor driven in driving component 1 whipping under the action of the centrifugal force, pushes active slip
Wheel 12 moves on sliding sleeve 15 and changes the interior wheel footpath of driving component 1, while driven wheel spring 25 is pushed by speed belt pulling force
Compression resets, and drives follower slip wheel 22 to move on the chute and change the interior wheel footpath of driven subassembly 2, above-mentioned reciprocation changes
The rotating ratio for becoming driving component 1 and driven subassembly 2 reaches electrodeless variable-speed effect.
The utility model provide battery-operated motor cycle no-clutch electrodeless variable-speed drive system, battery-operated motor cycle no-clutch without
Pole variable speed drive system, including driving component, driven subassembly, transport mechanism, driving component are mounted on the motor of battery-operated motor cycle
On output shaft, driving component is connect by transport mechanism with driven subassembly, the gearbox input of driven subassembly and battery-operated motor cycle
It is fixedly connected between axis by the first synchronizer mechanisms, passes through the second synchronizer mechanisms between driven subassembly and transmission input shaft
Rotation connection.The utility model eliminates clutch and transport drum mechanism on traditional CVT electrodeless variable-speed drive system driven wheel,
The purpose that bearing and unilateral bearing are reached power transmission and be freely rotated is installed in driven subassembly, when system is by motor driven
Whipping, promotion active slip wheel move on sliding sleeve and change driving component ball in driving component under the action of the centrifugal force
Interior wheel footpath, while the spring in driven wheel assembly is pushed compression by speed belt pulling force or resetted, and drives follower slip wheel in cunning
The interior wheel footpath of driven subassembly is moved and changed on slot, this reciprocation changes driving component and the rotating ratio of driven subassembly reaches nothing
Pole speed changing effect, the more traditional CVT stepless speed-changing system of the utility model structure is simple and cost is lower, and solves traditional CVT
Electrodeless variable-speed drive system set motor caused by battery-operated motor cycle idle running energy consumption and friction block are easy lacking for failure mode
Point, system possess electrodeless variable-speed function, can obtain equilibrium in power performance and cost control, solve existing using wheel hub electricity
The battery-operated motor cycle of machine and built-in motor does not have the problem of speed changing function in power transmission, makes battery-operated motor cycle in operating characteristic
And increase the safety ridden and comfort closer to internal combustion engine motorcycle in performance, realize battery-operated motor cycle with smaller
Less consume energy of power meets the target of riding of the longer mileage of faster speed.
More than, the only preferred embodiment of the utility model not makees limit in any form to the utility model
System；The those of ordinary skill of all industry can be shown in by specification attached drawing and above and swimmingly implement the utility model；But
It is that all those skilled in the art are not departing within the scope of technical solutions of the utility model, utilizes disclosed above skill
Art content and the equivalent variations of a little variation, modification and evolution made, are the equivalent embodiment of the utility model；Meanwhile
The variation, modification and evolution etc. of all substantial technological any equivalent variationss to the above embodiments according to the utility model,
Within the protection scope for still falling within the technical solution of the utility model.
Claims (10)
1. battery-operated motor cycle no-clutch electrodeless variable-speed drive system, it is characterised in that: including driving component, driven subassembly, biography
Mechanism is sent, the driving component is mounted on the motor output shaft of battery-operated motor cycle, and the driving component passes through the conveyer
Structure is connect with the driven subassembly, passes through the first synchronizer between the driven subassembly and the transmission input shaft of battery-operated motor cycle
Mechanism is fixedly connected, and is rotatablely connected between the driven subassembly and the transmission input shaft by the second synchronizer mechanisms.
2. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as described in claim 1, it is characterised in that: the active
Component includes active fast pulley, active slip wheel, the first Power Component, and the active fast pulley is fixed with the motor output shaft
Connection, the active slip wheel are slidably connected with the motor output shaft, and the transport mechanism is placed in the active fast pulley, institute
It states between active slip wheel, first Power Component is connect with the active slip wheel, and first Power Component pushes institute
It is mobile to state active slip wheel.
3. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as claimed in claim 2, it is characterised in that: described driven
Component includes driven fast pulley, the follower slip wheel equipped with sliding slot, the second Power Component, the driven fast pulley, described driven
Movable pulley is fixedly connected with the transmission input shaft, and the transport mechanism is placed in the driven fast pulley, the follower slip
Between wheel, second Power Component is connect with the follower slip wheel, and second Power Component drives the follower slip
Wheel moves on the chute.
4. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as claimed in claim 3, it is characterised in that: described driven
Fast pulley and the active slip wheel are located at the side of the transport mechanism, the follower slip wheel and active fast pulley position
In the other side of the transport mechanism.
5. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as claimed in claim 4, it is characterised in that: described first
Power Component includes ball and stationary backplate, and the active slip wheel inner wall is equipped with mounting groove, and described stationary backplate one end is solid
Loaded in the mounting groove, the stationary backplate other end is placed in the active slip wheel inner wall and the motor output shaft for Dingan County
Between form the first cavity, the ball is placed in first cavity, and the ball pushes the master under the action of the centrifugal force
Dynamic movable pulley is mobile.
6. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as claimed in claim 5, it is characterised in that: described second
Power Component includes driven wheel spring and spring retaining plate, and the spring retaining plate is installed on the follower slip wheel, described
The both ends of spring retaining plate, which are placed between the follower slip wheel inner wall and the transmission input shaft, forms the second cavity, described
Driven wheel spring is placed in second cavity, and is fixedly mounted on the spring retaining plate and the follower slip wheel, institute
State driven wheel spring drives the follower slip wheel to move on the chute under the transport mechanism active force.
7. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as claimed in claim 2, it is characterised in that: the active
Component further includes sliding sleeve, and the sliding sleeve is sheathed on the motor output shaft, and the active slip wheel passes through the sliding sleeve and institute
Motor output shaft is stated to be slidably connected.
8. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as described in claim 1, it is characterised in that: described first
Synchronizer mechanisms are bearing, and the bearing is locked with the transmission input shaft.
9. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as described in claim 1, it is characterised in that: described second
Synchronizer mechanisms are unilateral bearing, and the unilateral bearing is contacted with the transmission input shaft.
10. battery-operated motor cycle no-clutch electrodeless variable-speed drive system as described in claim 1, it is characterised in that: the biography
Sending mechanism is speed belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821057081.9U CN208931568U (en) | 2018-07-04 | 2018-07-04 | Battery-operated motor cycle no-clutch electrodeless variable-speed drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821057081.9U CN208931568U (en) | 2018-07-04 | 2018-07-04 | Battery-operated motor cycle no-clutch electrodeless variable-speed drive system |
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| Publication Number | Publication Date |
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| CN208931568U true CN208931568U (en) | 2019-06-04 |
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ID=66715754
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821057081.9U Active CN208931568U (en) | 2018-07-04 | 2018-07-04 | Battery-operated motor cycle no-clutch electrodeless variable-speed drive system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108995757A (en) * | 2018-07-04 | 2018-12-14 | 重庆宗申杰米科技有限公司 | Battery-operated motor cycle no-clutch stepless speed change driving system |
-
2018
- 2018-07-04 CN CN201821057081.9U patent/CN208931568U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108995757A (en) * | 2018-07-04 | 2018-12-14 | 重庆宗申杰米科技有限公司 | Battery-operated motor cycle no-clutch stepless speed change driving system |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220630 Address after: 401320 building 14, No. 126, Yunan Avenue, Banan District, Chongqing Patentee after: CHONGQING ZONGSHEN INNOVATION TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. Address before: 401120 A30, No. 1-2, floor 1, Zone C, Neptune, No. 62, Xingguang Avenue, North New Area, Yubei District, Chongqing Patentee before: CHONGQING ZONGSHEN JIEMI TECHNOLOGY CO.,LTD. |
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